The 2018 Cork Senior Football Championship was the 130th staging of the Cork Senior Football Championship since its establishment by the Cork County Board in 1887. The draw for the 2018 opening fixtures took place on 10 December 2017. The championship began on 18 March 2018 and ended on 28 October 2018.

Nemo Rangers entered the championship as the defending champions, however, they were defeated by Castlehaven at the quarter-final stage.

On 28 October 2018, St. Finbarr's won the championship following a 3-14 to 2-14 defeat of Duhallow in the final. This was their 9th championship title overall and their first title since 1985.

Promoted from the Cork Premier Intermediate Football Championship

The 2018 championship will see a total of 27 teams compete for the title. These consist of 19 club teams, 6 divisional teams and 2 college teams.

A new format will be used for the 2018 championship. For the first time since 2015, the divisions and colleges will compete in their own mini championship before entering the championship proper.

Round 1: Eight teams will contest this round. The four winning teams will advance to Round 2. The four losing teams will be eliminated from the championship.

Round 2: Four teams will contest this round. The two winning teams will advance to Round 3 of the championship proper. The two losing teams will be eliminated from the championship.